Speaker
Description
The effect of gravitational lensing of the cosmic microwave background
(CMB) provides a unique opportunity to obtain a picture of the
gravitational potential of the large-scale structure of the Universe
at very high redshifts. Tomographic cross-correlation of the
gravitational potential with other tracers of the large-scale
structure at known redshifts allows tracing the evolution of the
structure and testing cosmological models. However, the analysis of
upcoming data will require a very good understanding of any systematic
errors that may bias cross-correlation measurements. In this talk we
will present studies of systematic errors arising from redshift bin
mismatch of galaxies with photometric redshift uncertainties. We show
their impact on the cross-correlation measurement and cosmological
parameter estimates for future data sets. We also present an efficient
method for mitigation of the errors.
